Further, having affirmed that he would be beholden to none of them, he got the contract to carry the United States mail, twice a week, from Kelterville up over Tarwater Mountain to Old Almaden--which was a sporadically worked quick-silver mine in the upland cattle country.
spindle. 1. a pin tapered at one end or both ends, or something with this shape. 2. the thin, tapering figure occurring during metaphase of cell division, composed of microtubules radiating from the centrioles and connecting to the chromosomes at their centromeres.
Sleep spindles are bursts of neural oscillatory activity that are generated by interplay of the thalamic reticular nucleus (TRN) and other thalamic nuclei during stage 2 NREM sleep in a frequency of ~10 â12 Hz for at least 0.5 seconds.